what are the number of triangles which can be formed by joining three angular points of a quindecagon????

Dear neeraj

Solution:

we have to select three point for each triangle ,thus the required number is

        = ¹⁵C₃  = 455

Please feel free to post as many doubts on our discussion forum as you can.
If you find any question Difficult to understand - post it here and we will get you
the answer and detailed  solution very  quickly.

 We are all IITians and here to help you in your IIT JEE preparation.

All the best.
 
Regards,
Askiitians Experts
Badiuddin